/**
 * Furnace Tracker - multi-system chiptune tracker
 * Copyright (C) 2021-2025 tildearrow and contributors
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "gui.h"
#include "guiConst.h"
#include "../fileutils.h"
#include "misc/cpp/imgui_stdlib.h"
#include <imgui.h>

const char* audioExportFormats[]={
  _N("Wave"),
  _N("Opus"),
  _N("FLAC (Free Lossless Audio Codec)"),
  _N("Vorbis"),
  _N("MP3"),
  NULL
};

const char* audioExportWavFormats[]={
  _N("8-bit int (unsigned)"),
  _N("16-bit int"),
  _N("32-bit float"),
  NULL
};

void FurnaceGUI::drawExportAudio(bool onWindow) {
  exitDisabledTimer=1;

  ImGui::Text(_("Export type:"));

  ImGui::Indent();
  if (ImGui::RadioButton(_("one file"),audioExportOptions.mode==DIV_EXPORT_MODE_ONE)) {
    audioExportOptions.mode=DIV_EXPORT_MODE_ONE;
  }
  if (ImGui::RadioButton(_("multiple files (one per chip)"),audioExportOptions.mode==DIV_EXPORT_MODE_MANY_SYS)) {
    audioExportOptions.mode=DIV_EXPORT_MODE_MANY_SYS;
    audioExportOptions.format=DIV_EXPORT_FORMAT_WAV;
    audioExportOptions.wavFormat=DIV_EXPORT_WAV_S16;
  }
  if (ImGui::RadioButton(_("multiple files (one per channel)"),audioExportOptions.mode==DIV_EXPORT_MODE_MANY_CHAN)) {
    audioExportOptions.mode=DIV_EXPORT_MODE_MANY_CHAN;
  }
  ImGui::Unindent();
  ImGui::Separator();

  if (audioExportOptions.mode!=DIV_EXPORT_MODE_MANY_SYS) {
    if (ImGui::BeginCombo(_("File Format"),audioExportFormats[audioExportOptions.format])) {
      for (size_t i=0; i<(supportsMP3?5:4); i++) {
        if (ImGui::Selectable(_(audioExportFormats[i]),audioExportOptions.format==i)) {
          audioExportOptions.format=(DivAudioExportFormats)i;
        }
      }
      ImGui::EndCombo();
    }
    ImGui::Separator();
  } else {
    audioExportOptions.format=DIV_EXPORT_FORMAT_WAV;
    audioExportOptions.wavFormat=DIV_EXPORT_WAV_S16;
  }
  
  if (audioExportOptions.mode!=DIV_EXPORT_MODE_MANY_SYS && audioExportOptions.format==DIV_EXPORT_FORMAT_WAV) {
    if (ImGui::BeginCombo(_("Format"),audioExportWavFormats[audioExportOptions.wavFormat])) {
      for (size_t i=0; audioExportWavFormats[i]; i++) {
        if (ImGui::Selectable(_(audioExportWavFormats[i]),audioExportOptions.wavFormat==i)) {
          audioExportOptions.wavFormat=(DivAudioExportWavFormats)i;
        }
      }
      ImGui::EndCombo();
    }
  }

  if (audioExportOptions.format!=DIV_EXPORT_FORMAT_OPUS) {
    if (ImGui::InputInt(_("Sample rate"),&audioExportOptions.sampleRate,100,10000)) {
      if (audioExportOptions.sampleRate<8000) audioExportOptions.sampleRate=8000;
      if (audioExportOptions.sampleRate>384000) audioExportOptions.sampleRate=384000;
    }
  }

  if (audioExportOptions.mode!=DIV_EXPORT_MODE_MANY_SYS) {
    if (ImGui::InputInt(_("Channels in file"),&audioExportOptions.chans,1,1)) {
      if (audioExportOptions.chans<1) audioExportOptions.chans=1;
      if (audioExportOptions.chans>16) audioExportOptions.chans=16;
    }
  }

  if (audioExportOptions.format==DIV_EXPORT_FORMAT_MPEG_L3) {
    ImGui::Text(_("Bit rate mode:"));
    ImGui::Indent();
    if (ImGui::RadioButton(_("Constant"),audioExportOptions.bitRateMode==DIV_EXPORT_BITRATE_CONSTANT)) {
      audioExportOptions.bitRateMode=DIV_EXPORT_BITRATE_CONSTANT;
    }
    if (ImGui::RadioButton(_("Variable"),audioExportOptions.bitRateMode==DIV_EXPORT_BITRATE_VARIABLE)) {
      audioExportOptions.bitRateMode=DIV_EXPORT_BITRATE_VARIABLE;
    }
    if (ImGui::RadioButton(_("Average"),audioExportOptions.bitRateMode==DIV_EXPORT_BITRATE_AVERAGE)) {
      audioExportOptions.bitRateMode=DIV_EXPORT_BITRATE_AVERAGE;
    }
    ImGui::Unindent();
  }

  int minBitRate=6000;
  int maxBitRate=256000;

  if (audioExportOptions.format==DIV_EXPORT_FORMAT_MPEG_L3) {
    if (audioExportOptions.sampleRate>=32000) {
      minBitRate=32000;
      maxBitRate=320000;
    } else if (audioExportOptions.sampleRate>=16000) {
      minBitRate=8000;
      maxBitRate=160000;
    } else {
      minBitRate=8000;
      maxBitRate=64000;
    }
  }

  if (audioExportOptions.format!=DIV_EXPORT_FORMAT_WAV) {
    if (audioExportOptions.format==DIV_EXPORT_FORMAT_FLAC) {
      if (ImGui::SliderFloat(_("Compression level"),&audioExportOptions.vbrQuality,0,8)) {
        if (audioExportOptions.vbrQuality<0) audioExportOptions.vbrQuality=0;
        if (audioExportOptions.vbrQuality>8) audioExportOptions.vbrQuality=8;
      }
    } else if (audioExportOptions.format==DIV_EXPORT_FORMAT_VORBIS || (audioExportOptions.format==DIV_EXPORT_FORMAT_MPEG_L3 && audioExportOptions.bitRateMode==DIV_EXPORT_BITRATE_VARIABLE)) {
      if (ImGui::SliderFloat(_("Quality"),&audioExportOptions.vbrQuality,0,10)) {
        if (audioExportOptions.vbrQuality<0) audioExportOptions.vbrQuality=0;
        if (audioExportOptions.vbrQuality>10) audioExportOptions.vbrQuality=10;
      }
    } else {
      if (ImGui::InputInt(_("Bit rate"),&audioExportOptions.bitRate,1000,10000)) {
      }
      if (audioExportOptions.bitRate<minBitRate) audioExportOptions.bitRate=minBitRate;
      if (audioExportOptions.bitRate>maxBitRate) audioExportOptions.bitRate=maxBitRate;
    }
  }
  ImGui::Separator();

  if (ImGui::InputInt(_("Loops"),&audioExportOptions.loops,1,2)) {
    if (audioExportOptions.loops<0) audioExportOptions.loops=0;
  }
  if (ImGui::InputDouble(_("Fade out (seconds)"),&audioExportOptions.fadeOut,1.0,2.0,"%.1f")) {
    if (audioExportOptions.fadeOut<0.0) audioExportOptions.fadeOut=0.0;
  }

  bool isOneOn=false;
  if (audioExportOptions.mode==DIV_EXPORT_MODE_MANY_CHAN) {
    ImGui::Text(_("Channels to export:"));
    ImGui::SameLine();
    if (ImGui::SmallButton(_("All"))) {
      for (int i=0; i<DIV_MAX_CHANS; i++) {
        audioExportOptions.channelMask[i]=true;
      }
    }
    ImGui::SameLine();
    if (ImGui::SmallButton(_("None"))) {
      for (int i=0; i<DIV_MAX_CHANS; i++) {
        audioExportOptions.channelMask[i]=false;
      }
    }
    ImGui::SameLine();
    if (ImGui::SmallButton(_("Shown in pattern"))) {
      for (int i=0; i<DIV_MAX_CHANS; i++) {
        audioExportOptions.channelMask[i]=e->curSubSong->chanShow[i];
      }
    }
    ImGui::SameLine();
    if (ImGui::SmallButton(_("Shown in oscilloscope"))) {
      for (int i=0; i<DIV_MAX_CHANS; i++) {
        audioExportOptions.channelMask[i]=e->curSubSong->chanShowChanOsc[i];
      }
    }
    ImGui::SameLine();
    if (ImGui::SmallButton(_("Invert"))) {
      for (int i=0; i<DIV_MAX_CHANS; i++) {
        audioExportOptions.channelMask[i]=!audioExportOptions.channelMask[i];
      }
    }

    if (ImGui::BeginChild("Channel Selection",ImVec2(0,200.0f*dpiScale))) {
      for (int i=0; i<e->getTotalChannelCount(); i++) {
        String name=fmt::sprintf("%d. %s##_CE%d",i+1,e->getChannelName(i),i);
        ImGui::Checkbox(name.c_str(),&audioExportOptions.channelMask[i]);
        if (audioExportOptions.channelMask[i]) isOneOn=true;
      }
    }
    ImGui::EndChild();
  } else {
    isOneOn=true;
  }

  if (onWindow) {
    ImGui::Separator();
    if (ImGui::Button(_("Cancel"),ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
    ImGui::SameLine();
  }

  if (isOneOn) {
    if (ImGui::Button(_("Export"),ImVec2(200.0f*dpiScale,0))) {
      switch (audioExportOptions.format) {
        case DIV_EXPORT_FORMAT_WAV:
          audioExportFilterName=_("Wave file");
          audioExportFilterExt=".wav";
          break;
        case DIV_EXPORT_FORMAT_OPUS:
        case DIV_EXPORT_FORMAT_VORBIS:
          audioExportFilterName=_("Ogg files");
          audioExportFilterExt=".ogg";
          break;
        case DIV_EXPORT_FORMAT_FLAC:
          audioExportFilterName=_("FLAC files");
          audioExportFilterExt=".flac";
          break;
        case DIV_EXPORT_FORMAT_MPEG_L3:
          audioExportFilterName=_("MPEG Layer 3 files");
          audioExportFilterExt=".mp3";
          break;
        default:
          audioExportFilterName=_("all files");
          audioExportFilterExt="*";
          break;
      }

      switch (audioExportOptions.mode) {
        case DIV_EXPORT_MODE_ONE:
          openFileDialog(GUI_FILE_EXPORT_AUDIO_ONE);
          break;
        case DIV_EXPORT_MODE_MANY_SYS:
          openFileDialog(GUI_FILE_EXPORT_AUDIO_PER_SYS);
          break;
        case DIV_EXPORT_MODE_MANY_CHAN:
          openFileDialog(GUI_FILE_EXPORT_AUDIO_PER_CHANNEL);
          break;
      }
      ImGui::CloseCurrentPopup();
    }
  } else {
    ImGui::Text(_("select at least one channel"));
  }
}

void FurnaceGUI::drawExportVGM(bool onWindow) {
  exitDisabledTimer=1;

  ImGui::Text(_("settings:"));
  if (ImGui::BeginCombo(_("format version"),fmt::sprintf("%d.%.2x",vgmExportVersion>>8,vgmExportVersion&0xff).c_str())) {
    for (int i=0; i<7; i++) {
      if (ImGui::Selectable(fmt::sprintf("%d.%.2x",vgmVersions[i]>>8,vgmVersions[i]&0xff).c_str(),vgmExportVersion==vgmVersions[i])) {
        vgmExportVersion=vgmVersions[i];
      }
    }
    ImGui::EndCombo();
  }
  ImGui::Checkbox(_("loop"),&vgmExportLoop);
  if (vgmExportLoop && e->song.compatFlags.loopModality==2) {
    ImGui::Text(_("loop trail:"));
    ImGui::Indent();
    if (ImGui::RadioButton(_("auto-detect"),vgmExportTrailingTicks==-1)) {
      vgmExportTrailingTicks=-1;
    }
    if (ImGui::RadioButton(_("add one loop"),vgmExportTrailingTicks==-2)) {
      vgmExportTrailingTicks=-2;
    }
    if (ImGui::RadioButton(_("custom"),vgmExportTrailingTicks>=0)) {
      vgmExportTrailingTicks=0;
    }
    if (vgmExportTrailingTicks>=0) {
      ImGui::SameLine();
      if (ImGui::InputInt("##TrailTicks",&vgmExportTrailingTicks,1,100)) {
        if (vgmExportTrailingTicks<0) vgmExportTrailingTicks=0;
      }
    }
    ImGui::Unindent();
  }
  ImGui::Checkbox(_("add pattern change hints"),&vgmExportPatternHints);
  if (ImGui::IsItemHovered()) {
    ImGui::SetTooltip(_(
      "inserts data blocks on pattern changes.\n"
      "useful if you are writing a playback routine.\n\n"

      "the format of a pattern change data block is:\n"
      "67 66 FE ll ll ll ll 01 oo rr pp pp pp ...\n"
      "- ll: length, a 32-bit little-endian number\n"
      "- oo: order\n"
      "- rr: initial row (a 0Dxx effect is able to select a different row)\n"
      "- pp: pattern index (one per channel)\n\n"

      "pattern indexes are ordered as they appear in the song."
    ));
  }
  ImGui::Checkbox(_("direct stream mode"),&vgmExportDirectStream);
  if (ImGui::IsItemHovered()) {
    ImGui::SetTooltip(_(
      "required for DualPCM and MSM6258 export.\n\n"
      "allows for volume/direction changes when playing samples,\n"
      "at the cost of a massive increase in file size."
    ));
  }
  ImGui::Text(_("chips to export:"));
  bool hasOneAtLeast=false;
  bool hasNES=false;
  for (int i=0; i<e->song.systemLen; i++) {
    int minVersion=e->minVGMVersion(e->song.system[i]);
    if (e->song.system[i]==DIV_SYSTEM_NES) hasNES=true;
    ImGui::BeginDisabled(minVersion>vgmExportVersion || minVersion==0);
    ImGui::Checkbox(fmt::sprintf("%d. %s##_SYSV%d",i+1,getSystemName(e->song.system[i]),i).c_str(),&willExport[i]);
    ImGui::EndDisabled();
    if (minVersion>vgmExportVersion) {
      if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
        ImGui::SetTooltip(_("this chip is only available in VGM %d.%.2x and higher!"),minVersion>>8,minVersion&0xff);
      }
    } else if (minVersion==0) {
      if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled)) {
        ImGui::SetTooltip(_("this chip is not supported by the VGM format!"));
      }
    } else {
      if (willExport[i]) hasOneAtLeast=true;
    }
  }
  ImGui::Text(_("select the chip you wish to export, but only up to %d of each type."),(vgmExportVersion>=0x151)?2:1);

  if (hasNES) {
    ImGui::Text(_("NES DPCM bank switch method:"));
    if (ImGui::RadioButton(_("data blocks"),!vgmExportDPCM07)) {
      vgmExportDPCM07=false;
    }
    if (ImGui::IsItemHovered()) {
      ImGui::SetTooltip(_("67 66 C2 - writes a new data block on each bank switch.\nmay result in bigger files but is compatible with all players."));
    }
    if (ImGui::RadioButton(_("RAM write commands"),vgmExportDPCM07)) {
      vgmExportDPCM07=true;
    }
    if (ImGui::IsItemHovered()) {
      ImGui::SetTooltip(_("67 66 07 - uses RAM write commands (68) to switch banks.\nnot all VGM players support this!"));
    }
  }

  ImGui::Text(_("speed drift compensation:"));
  if (ImGui::RadioButton(_("none"),vgmExportCorrectedRate==44100)) {
    vgmExportCorrectedRate=44100;
  }
  // as tested on a Model 1 Genesis (VA6, USA):
  // 0.97841613336995507871 slower, 1.02206000687632131440 longer
  if (ImGui::RadioButton(_("DeadFish VgmPlay (1.02×)"),vgmExportCorrectedRate==43148)) {
    vgmExportCorrectedRate=43148;
  }

  if (hasOneAtLeast) {
    if (onWindow) {
      ImGui::Separator();
      if (ImGui::Button(_("Cancel"),ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
      ImGui::SameLine();
    }
    if (ImGui::Button(_("Export"),ImVec2(200.0f*dpiScale,0))) {
      openFileDialog(GUI_FILE_EXPORT_VGM);
      ImGui::CloseCurrentPopup();
    }
  } else {
    ImGui::Text(_("nothing to export"));
    if (onWindow) {
      ImGui::Separator();
      if (ImGui::Button(_("Cancel"),ImVec2(400.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
    }
  }
}

void FurnaceGUI::drawExportROM(bool onWindow) {
  exitDisabledTimer=1;

  const DivROMExportDef* def=e->getROMExportDef(romTarget);

  ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
  if (ImGui::BeginCombo("##ROMTarget",def==NULL?"<select one>":def->name)) {
    for (int i=0; i<DIV_ROM_MAX; i++) {
      const DivROMExportDef* newDef=e->getROMExportDef((DivROMExportOptions)i);
      if (newDef!=NULL) {
        if (romExportAvail[i]) {
          if (ImGui::Selectable(newDef->name)) {
            romTarget=(DivROMExportOptions)i;
            romMultiFile=newDef->multiOutput;
            romConfig=DivConfig();
            if (newDef->fileExt==NULL) {
              romFilterName="";
              romFilterExt="";
            } else {
              romFilterName=newDef->fileType;
              romFilterExt=newDef->fileExt;
            }
          }
        }
      }
    }
    ImGui::EndCombo();
  }

  if (def!=NULL) {
    ImGui::Text("by %s",def->author);

    ImGui::TextWrapped("%s",def->description);
  }

  ImGui::Separator();

  bool altered=false;

  switch (romTarget) {
    case DIV_ROM_TIUNA: {
      String asmBaseLabel=romConfig.getString("baseLabel","twin");
      int firstBankSize=romConfig.getInt("firstBankSize",1024);
      int otherBankSize=romConfig.getInt("otherBankSize",4096-48);
      int sysToExport=romConfig.getInt("sysToExport",-1);

      // TODO; validate label
      if (ImGui::InputText(_("base song label name"),&asmBaseLabel)) {
        altered=true;
      }
      if (ImGui::InputInt(_("max size in first bank"),&firstBankSize,1,100)) {
        if (firstBankSize<0) firstBankSize=0;
        if (firstBankSize>4096) firstBankSize=4096;
        altered=true;
      }
      if (ImGui::InputInt(_("max size in other banks"),&otherBankSize,1,100)) {
        if (otherBankSize<16) otherBankSize=16;
        if (otherBankSize>4096) otherBankSize=4096;
        altered=true;
      }
      
      ImGui::Text(_("chip to export:"));
      for (int i=0; i<e->song.systemLen; i++) {
        DivSystem sys=e->song.system[i];
        bool isTIA=(sys==DIV_SYSTEM_TIA);
        ImGui::BeginDisabled(!isTIA);
        if (ImGui::RadioButton(fmt::sprintf("%d. %s##_SYSV%d",i+1,getSystemName(e->song.system[i]),i).c_str(),sysToExport==i)) {
          sysToExport=i;
          altered=true;
        }
        ImGui::EndDisabled();
      }
      if (altered) {
        romConfig.set("baseLabel",asmBaseLabel);
        romConfig.set("firstBankSize",firstBankSize);
        romConfig.set("otherBankSize",otherBankSize);
        romConfig.set("sysToExport",sysToExport);
      }
      break;
    }
    case DIV_ROM_ZSM: {
      int zsmExportTickRate=romConfig.getInt("zsmrate",60);
      bool zsmExportLoop=romConfig.getBool("loop",true);
      bool zsmExportOptimize=romConfig.getBool("optimize",true);

      if (ImGui::InputInt(_("Tick Rate (Hz)"),&zsmExportTickRate,1,2)) {
        if (zsmExportTickRate<1) zsmExportTickRate=1;
        if (zsmExportTickRate>44100) zsmExportTickRate=44100;
        altered=true;
      }
      if (ImGui::Checkbox(_("loop"),&zsmExportLoop)) {
        altered=true;
      }
      if (ImGui::Checkbox(_("optimize size"),&zsmExportOptimize)) {
        altered=true;
      }
      if (altered) {
        romConfig.set("zsmrate",zsmExportTickRate);
        romConfig.set("loop",zsmExportLoop);
        romConfig.set("optimize",zsmExportOptimize);
      }
      break;
    }
    case DIV_ROM_GRUB: {
      bool grubExportBin=romConfig.getBool("exportBin",false);
      if (ImGui::Checkbox(_("export binary file"),&grubExportBin)) {
        altered=true;
      }
      if (altered) {
        romConfig.set("exportBin",grubExportBin);
      }
      break;
    }
    case DIV_ROM_ABSTRACT:
      ImGui::TextWrapped("%s",_("select a target from the menu at the top of this dialog."));
      break;
    default:
      ImGui::TextWrapped("%s",_("this export method doesn't offer any options."));
      break;
  }
  /*
  */

  if (onWindow) {
    ImGui::Separator();
    if (ImGui::Button(_("Cancel"),ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
    ImGui::SameLine();
  }
  if (ImGui::Button(_("Export"),ImVec2(200.0f*dpiScale,0))) {
    openFileDialog(GUI_FILE_EXPORT_ROM);
    ImGui::CloseCurrentPopup();
  }
}

void FurnaceGUI::drawExportText(bool onWindow) {
  exitDisabledTimer=1;

  ImGui::Text(
    _("this option exports the song to a text file.\n")
  );
  if (onWindow) {
    ImGui::Separator();
    if (ImGui::Button(_("Cancel"),ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
    ImGui::SameLine();
  }
  if (ImGui::Button(_("Export"),ImVec2(200.0f*dpiScale,0))) {
    openFileDialog(GUI_FILE_EXPORT_TEXT);
    ImGui::CloseCurrentPopup();
  }
}

void FurnaceGUI::commandExportOptions() {
  ImGui::Checkbox(_("Long pointers (use for 64K+ size streams)"),&csExportOptions.longPointers);
  ImGui::Checkbox(_("Big endian mode"),&csExportOptions.bigEndian);
  ImGui::Separator();
  ImGui::Checkbox(_("Don't optimize command calls"),&csExportOptions.noCmdCallOpt);
  ImGui::Checkbox(_("Don't condense delays"),&csExportOptions.noDelayCondense);
  ImGui::Checkbox(_("Don't perform sub-block search"),&csExportOptions.noSubBlock);
}

void FurnaceGUI::drawExportCommand(bool onWindow) {
  exitDisabledTimer=1;
  
  ImGui::Text(_(
    "this option exports a binary file which\n"
    "contains a dump of the internal command stream\n"
    "produced when playing the song.\n\n"

    "technical/development use only!"
  ));

  commandExportOptions();

  if (onWindow) {
    ImGui::Separator();
    if (ImGui::Button(_("Cancel"),ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
    ImGui::SameLine();
  }
  if (ImGui::Button(_("Export"),ImVec2(200.0f*dpiScale,0))) {
    openFileDialog(GUI_FILE_EXPORT_CMDSTREAM);
    ImGui::CloseCurrentPopup();
  }
}

void FurnaceGUI::drawExportDMF(bool onWindow) {
  exitDisabledTimer=1;

  ImGui::Text(_(
    "export in DefleMask module format.\n"
    "only do it if you really, really need to, or are downgrading an existing .dmf."
  ));

  ImGui::Text(_("format version:"));
  ImGui::RadioButton(_("1.1.3 and higher"),&dmfExportVersion,0);
  ImGui::RadioButton(_("1.0/legacy (0.12)"),&dmfExportVersion,1);

  if (onWindow) {
    ImGui::Separator();
    if (ImGui::Button(_("Cancel"),ImVec2(200.0f*dpiScale,0))) ImGui::CloseCurrentPopup();
    ImGui::SameLine();
  }
  if (ImGui::Button(_("Export"),ImVec2(200.0f*dpiScale,0))) {
    if (dmfExportVersion==1) {
      openFileDialog(GUI_FILE_SAVE_DMF_LEGACY);
    } else {
      openFileDialog(GUI_FILE_SAVE_DMF);
    }
    ImGui::CloseCurrentPopup();
  }
}

void FurnaceGUI::drawExport() {
  if (settings.exportOptionsLayout==1 || curExportType==GUI_EXPORT_NONE) {
    if (ImGui::BeginTabBar("ExportTypes")) {
      if (ImGui::BeginTabItem(_("Audio"))) {
        drawExportAudio(true);
        ImGui::EndTabItem();
      }
      if (ImGui::BeginTabItem(_("VGM"))) {
        drawExportVGM(true);
        ImGui::EndTabItem();
      }
      if (romExportExists) {
        if (ImGui::BeginTabItem(_("ROM"))) {
          drawExportROM(true);
          ImGui::EndTabItem();
        }
      }
      if (ImGui::BeginTabItem(_("Text"))) {
        drawExportText(true);
        ImGui::EndTabItem();
      }
      if (ImGui::BeginTabItem(_("Command Stream"))) {
        drawExportCommand(true);
        ImGui::EndTabItem();
      }
      if (ImGui::BeginTabItem(_("DMF"))) {
        drawExportDMF(true);
        ImGui::EndTabItem();
      }
      ImGui::EndTabBar();
    }
  } else switch (curExportType) {
    case GUI_EXPORT_AUDIO:
      drawExportAudio(true);
      break;
    case GUI_EXPORT_VGM:
      drawExportVGM(true);
      break;
    case GUI_EXPORT_ROM:
      drawExportROM(true);
      break;
    case GUI_EXPORT_TEXT:
      drawExportText(true);
      break;
    case GUI_EXPORT_CMD_STREAM:
      drawExportCommand(true);
      break;
    case GUI_EXPORT_DMF:
      drawExportDMF(true);
      break;
    default:
      ImGui::Text(_("congratulations! you've unlocked a secret panel."));
      if (ImGui::Button(_("Toggle hidden systems"))) {
        settings.hiddenSystems=!settings.hiddenSystems;
        ImGui::CloseCurrentPopup();
      }
      if (ImGui::Button(_("Toggle all instrument types"))) {
        settings.displayAllInsTypes=!settings.displayAllInsTypes;
        ImGui::CloseCurrentPopup();
      }
      if (ImGui::Button(_("Set pitch linearity to Partial"))) {
        showError(_("No!"));
        ImGui::CloseCurrentPopup();
      }
      if (ImGui::Button(_("Set fat to max"))) {
        ImGuiStyle& sty=ImGui::GetStyle();
        sty.FramePadding=ImVec2(20.0f*dpiScale,20.0f*dpiScale);
        sty.ItemSpacing=ImVec2(10.0f*dpiScale,10.0f*dpiScale);
        sty.ItemInnerSpacing=ImVec2(10.0f*dpiScale,10.0f*dpiScale);
        ImGui::CloseCurrentPopup();
      }
      if (ImGui::Button(_("Set muscle and fat to zero"))) {
        ImGuiStyle& sty=ImGui::GetStyle();
        sty.FramePadding=ImVec2(0,0);
        sty.ItemSpacing=ImVec2(0,0);
        sty.ItemInnerSpacing=ImVec2(0,0);
        ImGui::CloseCurrentPopup();
      }
      if (ImGui::Button(_("Tell tildearrow this must be a mistake"))) {
        showError(_("yeah, it's a bug. write a bug report in the GitHub page and tell me how did you get here."));
        ImGui::CloseCurrentPopup();
      }
      break;
  }
  if (ImGui::IsKeyPressed(ImGuiKey_Escape)) {
    ImGui::CloseCurrentPopup();
  }
}
